Right. He's fallen in love with the alien race and their culture, and his boss then tells him they are going to nuke their spiritual homes. He just sits in his wheelchair pretty emotionless. That's just one example.

Sam Worthington is pretty. That's about it and probably the only reason he was picked for the role. He probably cost less than a higher profile actor as well.

Now if Cameron had cast the guy from Paranormal Activity that would have been hilarious.

Avatar takes place in the Mass Effect universe. It is set after humans found Prothean ruins on mars and reverse engineered mass effect technology but before they found the first mass relay and made contact with the citadel. 'Unobtanium' is Element 0. It is not a room temperature superconductor. The magnetic field of Pandora and its parent gas giant induce electrical currents in the element zero rich mountains of Pandora, which decreases their mass to the point they float.The Na'vi are an evolutionarily close relative of the Asari. The common ancestor of both the asari and the Na'vi were placed on pandora by a precursor race (probably even before the protheans) as an experiment into the effects of Eezo on a primitive life form. Genetic tinkering caused the Na'vi to have two genders like a sensible species instead of just one, but the Asari evolved to the point they didn't need gross USB hair tentacles to mind-meld back on their own homeworld.There, explains everything.

Except Bioware come up with more alien aliens, like the hanar and elcor.

Looking through the ME1 Art Book, the 3 background aliens (volus and the above) could have been a lot weirder. Well, the elcor were going to look more humanoid before (one drawing looks suspiciuosly like an Ood) settling on the quadraped look, and the hanar were going to be insectoid, but were changed because they were too similar to the rachni.

In short, I still don't like the Na'vi design. Too human.

Technically the first mass realy was found orbiting Pluto. But is could be set before the First Contact War. Amnd there are some other holes in your theory, like the date.

After being kicked off Pandora by Jake and the Na'vi, RDA starts looking for the perfect weapon to retake Pandora. Eventually, through Weyland-Yutani, they learn about the Xenomorphs. A race that can decimate organic species is the perfect weapon to use against Pandora's all-living defenses. If xenomorphs 'accidentally' found their way onto Pandora, they could impregnate/destroy every Pandoran species and completely overtake the moon. This would leave RDA with an excuse to bomb the moon from orbit, and leave nothing between them and the unobtainium. RDA offers a tantalizingly huge amount of money for xenomorph specimens, and this is why, throughout the Alien movies, Weyland-Yutani wants to get their hands on them so much.

After being kicked off Pandora by Jake and the Na'vi, RDA starts looking for the perfect weapon to retake Pandora. Eventually, through Weyland-Yutani, they learn about the Xenomorphs. A race that can decimate organic species is the perfect weapon to use against Pandora's all-living defenses. If xenomorphs 'accidentally' found their way onto Pandora, they could impregnate/destroy every Pandoran species and completely overtake the moon. This would leave RDA with an excuse to bomb the moon from orbit, and leave nothing between them and the unobtainium. RDA offers a tantalizingly huge amount of money for xenomorph specimens, and this is why, throughout the Alien movies, Weyland-Yutani wants to get their hands on them so much.